Granted Patent
Utility
US 5,821,859 · App. 08/660,249
Concealed magnetic ID code and antitheft tag
Inventors:
Alejandro G. Schrott, Richard J. Gambino, Robert J. von Gutfeld
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: Jun 7, 1996
Inventors
Alejandro G. Schrott
Richard J. Gambino
Robert J. von Gutfeld
Assignee (at issue)
IBM Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.